<template>
<el-container class="home-container">
    <!-- 头部区域 -->
  <el-header>
      <div>
          <img src="../assets/heinma.png" alt="" width:20px height:20px>
          <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
      </el-header>
      <!-- 主体区域 -->
  <el-container>
      <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区 -->
         <el-menu
                 background-color="#313743"
                 text-color="#fff"
                 active-text-color="#67CDFE"
                 :unique-opened="true"
                 :collapse="isCollapse"
                 :collapse-transition="false"
                 :router="true"
                 :default-active="activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
        <!-- 一级菜单模板区 -->
        <template slot="title">
          <!-- 图标 -->
          <i :class="iconObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" 
        :key="subItem.id"  @click="saveNavState('/'+ subItem.path)">
          <template slot="title">
          <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
          </template>
          
        </el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <el-container>
      <el-main>
          <router-view></router-view>
      </el-main>
      <el-footer>Footer</el-footer>
    </el-container>
  </el-container>
</el-container>
</template>
<script>
export default {
    data(){
        return {
            menulist:[],
            iconObj:{
                125:'el-icon-s-custom',
                103:'el-icon-s-flag',
                101:'el-icon-shopping-bag-2',
                102:'el-icon-document-add',
                145:'el-icon-s-data'
            },
            isCollapse: false,
            //被激活的链接地址
            activePath:'/users'
           
        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
        this.activePath = activePath
    },
    methods:{
        logout(){
            window.sessionStorage.clear();
            this.$router.push("/login")
        },
        async getMenuList(){
            const {data : res} = await this.$http.get('menus')
            if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
            this.menulist = res.data
            // console.log(res)

        },
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
        },
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath', activePath)
            this.activePath=activePath
        }
    }
}
</script>

<style lang="less" scoped>
.home-container{
    height: 100vh;
}
.el-header{
     display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
    }
    span{
        margin-left: 15px;
    }
}
    



.el-header{
    background-color: #363D40;
}
.el-aside{
    background-color: #313743;
    .el-menu{
        border-right: none;
    }
}
.el-main{
    background-color: #E9EDF1;
}
.toggle-button{
    background-color: #475163;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>